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Beckers, Alexander Photography--History
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Revolving stereoscope viewer (A. Mattey)

Item is a wooden tabletop stereoscope with binocular viewer made with 50 built in glass stereographs of landscapes from Quebec and Montreal, factories and vernacular photography. Top of the stereoscope can open for additional light. Inside the object is a revolving metal belt (patented by Alexander Beckers) holding the stereographs that can be turned by the circular handles on the outside of the viewer.

Written on object: 76/Unis-France Stereoscopes Mattey-Paris/3.

Revolving stereoscope viewer (J.W. Cadwell)

Item is a wooden tabletop revolving stereoscope. Handles on sides of the object turn a internal central axle built to rotate stereographs. Stereograph slots come with a clip that holds two stereographs back to back. Double viewer is hooded to control additional light and moves to adjust view.

Cadwell, J.W.